Just like every other Firefox release, initial reception for the new browser has been nothing short of insane. 7.1 million downloads were registered in the first 24 hours and the download rate continued to accelerate, clocking in more than 15 million downloads after two days. At the time of writing, three days in, Firefox 4 has been downloaded over 25 million times. In case you're wondering, the United States accounts for 7 million of those downloads, just beating out Germany's Firefox-downloads-per-capita.

But now that you've installed Firefox 4 (you have, right?), what do you do now? Well, obviously, in true Download Squad fashion, it's time to tweak Firefox 4 using add-ons and about:config hacks!

First up is an add-on called Stratiform that lets you change every aspect of the Firefox 4 browser chrome -- including the color of that orange button!